/**
 * requestAnimationFrame 循环，只在最后一次执行回调
 * @param fn 回调函数
 * @param count 执行次数
 */
export const raf = (fn: () => void, count = 1) => {
  if (count <= 1) {
    return requestAnimationFrame(fn);
  }

  requestAnimationFrame(() => {
    raf(fn, count - 1);
  });
};
